abstract：<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>三级下拉菜单</title> <script type="text/javascript" src="jquer
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>三级下拉菜单</title>
<script type="text/javascript" src="jquery-3.3.1.min.js"></script>
<script>
$(document).ready(function(){
//隐藏二级与三级下拉菜单
$('.list2_box').hide();
$('.list3').hide();
// 获取.list1 获取一级菜单触摸显示二级菜单隐藏三级菜单
$('.list1>li').mousemove(function(){
$(this).find('.list2_box').show()
})
// 获取.list2box 二级级菜移开后隐藏二级菜单
$('.list1>li').mouseout(function(){
$(this).find('.list2_box').hide()
})
// 获取.two 触摸后展示三级菜单
$('.two').mousemove(function(){
$(this).find('.list3').show()
})
// 获取.two移开后隐藏三级菜单
$('.two').mouseout(function(){
$(this).find('.list3').hide()
})
});
</script>
<style type="text/css">
body{background: #ff3d1e;}
*{padding: 0px;margin: 0px;list-style: none;}
.menu{width: 800px;margin: 0 auto; height: 45px;background: #000;color: #ffffffd9;font-family: 宋体; font-size: 15px;border-radius: 5px;}
.border{border-right: 1px solid #fff;}
ul li{width: 100px;height: 45px;line-height: 45px;text-align: center;float: left;cursor: pointer;}
.list2_box{position: relative;}
.list2_box li{background:#88060652;}
.list2_box li:hover{background: #00000085;}
.list3{position: absolute;top: 45px; left: 100px;}
</style>
</head>
<body>
<div>
<ul><!-- 一级菜单 -->
<li><div>网站首页</div></li>
<li><div>一级菜单0</div>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
<li><div>一级菜单0</div>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
<li><div>一级菜单0</div>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
<li><div>一级菜单0</div>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
<li><div>一级菜单0</div>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
<li><div>一级菜单0</div>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
<li><span>一级菜单0</span>
<ul><!-- 二级菜单 -->
<li>二级菜单1</li>
<li>
<span>二级菜单2</span>
<ul><!-- 三级菜单 -->
<li>三级菜单1</li>
<li>三级菜单2</li>
<li>三级菜单3</li>
<li>三级菜单4</li>
</ul>
<li>二级菜单1</li>
<li>二级菜单1</li>
<li>二级菜单1</li>
</li>
</ul>
</li>
</ul>
</div>
</body>
</html>
Correcting teacher：韦小宝Correction time：2018-12-04 09:08:27
Teacher's summary：恩！写的很完整很棒哦！课后还要记得多多练习哦！